<template>
  <div class="login-container">
    <!-- 表单校验三要素 -->
    <!-- 1.el-form要有model属性绑定表单数据对象  rules属性绑定表单校验规则对象 ref引用 -->
    <!-- 2.el-form-item 要有prop属性绑定表单数据 -->
    <!-- 3.el-input表单控件 要有v-model双向绑定数据 -->
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
      label-position="left">
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>
      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="username" v-model="loginForm.mobile" placeholder="请输入账号" name="username" type="text" tabindex="1"
          auto-complete="on" />
      </el-form-item>
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <!-- .native的意思：这些都是组件，不是原生标签，加上native相当于加上移到了原生标签上或者是原生标签上添加自定义事件名为keyup -->
        <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType"
          placeholder="请输入密码" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button class="loginBtn" :loading="loading" type="primary" style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin">登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000002</span>
        <span> 密码: 123456</span>
      </div>

    </el-form>
  </div>
</template>

<script>
  import {
    validMobile
  } from '@/utils/validate'

  export default {
    name: 'Login',
    data() {
      //自定义校验函数
      //自定义校验函数=（验证规则，数据值，回调函数）=>{无论成功失败都要执行回调，如果验证失败回调函数要传入一个错误对象即可}
      const validateMobile = (rule, value, callback) => {
        // if (validMobile(value)) {
        //   //成功
        //   callback()
        // } else {
        //   //失败
        //    callback(new Error('手机格式不正确'))
        // }
        //三元表达式写法
        validMobile(value) ? callback() : callback(new Error('手机格式不正确'))
      }
      return {
        //表单校验数据
        loginForm: {
          mobile: '13800000002',
          password: '123456'
        },
        //表单校验规则
        loginRules: {
          mobile: [{
              required: true,
              trigger: 'blur',
              message: '手机号不能为空'
            },
            // {validator: 自定义校验函数,trigger:'blur'},
            {
              validator: validateMobile,
              trigger: 'blur'
            }
            //  {pattern: /^1[3-9]\d{9}$/,trigger:'blur',message:'手机号格式不正确'}   可以直接用pattern 就不用自定义校验函数
          ],
          password: [{
              required: true,
              trigger: 'blur',
              message: '密码不能为空'
            },
            {
              min: 6,
              max: 12,
              trigger: 'blur',
              message: '密码长度不正确'
            }
          ]
        },
        loading: false,
        passwordType: 'password',
        redirect: undefined
      }
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect
        },
        immediate: true
      }
    },
    methods: {
      showPwd() {
        if (this.passwordType === 'password') {
          this.passwordType = ''
        } else {
          this.passwordType = 'password'
        }
        this.$nextTick(() => {
          this.$refs.password.focus()
        })
      },
      //点击登录
      async handleLogin() {
        //先判断有没有验证成功
        try {
          //this.$refs.loginForm.validate()也是一个Promise函数 要用async await   await只会捕捉成功的结果
          await this.$refs.loginForm.validate()
        } catch (error) {
          return console.log(error);
        }
        //校验成功之后走登录
        this.loading = true //开始转圈圈
        try {
          //利用vuex里actions来调登录接口并且把token存到vuex里
          await this.$store.dispatch('user/actionsLogin', this.loginForm)
          //成功之后给个弹框提示
          this.$message.success('登录成功')
          this.$router.push({path: this.redirect || '/'})
        } catch (error) {
          console.log(error);
        } finally {
          //不论执行try 还是catch  都去关闭转圈
          this.loading = false
        }
      }
    }
  }
</script>

<style lang="scss">
  /* 修复input 背景不协调 和光标变色 */
  /* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

  $bg:#283443;
  $cursor: #fff;
  $light_gray: #68b0fe; // 将输入框颜色改成蓝色

  @supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
      color: $cursor;
    }
  }

  /* reset element-ui css */
  .login-container {
    background-image: url('~@/assets/common/login.jpg');

    .el-input {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }

    .el-form-item {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.7); // 输入登录表单的背景色
      border-radius: 5px;
      color: #454545;
    }

    .el-form-item__error {
      color: #fff
    }

    .loginBtn {
      background: #407ffe;
      height: 64px;
      line-height: 32px;
      font-size: 24px;
    }
  }
</style>

<style lang="scss" scoped>
  $bg:#2d3a4b;
  $dark_gray:#889aa4;
  $light_gray:#eee;

  .login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
      position: relative;
      width: 520px;
      max-width: 100%;
      padding: 160px 35px 0;
      margin: 0 auto;
      overflow: hidden;
    }

    .tips {
      font-size: 14px;
      color: #fff;
      margin-bottom: 10px;

      span {
        &:first-of-type {
          margin-right: 16px;
        }
      }
    }

    .svg-container {
      padding: 6px 5px 6px 15px;
      color: $dark_gray;
      vertical-align: middle;
      width: 30px;
      display: inline-block;
    }

    .title-container {
      position: relative;

      .title {
        font-size: 26px;
        color: $light_gray;
        margin: 0px auto 40px auto;
        text-align: center;
        font-weight: bold;
      }
    }

    .show-pwd {
      position: absolute;
      right: 10px;
      top: 7px;
      font-size: 16px;
      color: $dark_gray;
      cursor: pointer;
      user-select: none;
    }
  }
</style>